drivers/ata/sata_uli.c

   1 /*
   2  *  sata_uli.c - ULi Electronics SATA
   3  *
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; see the file COPYING.  If not, write to
  17  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  *
  20  *  libata documentation is available via 'make {ps|pdf}docs',
  21  *  as Documentation/DocBook/libata.*
  22  *
  23  *  Hardware documentation available under NDA.
  24  *
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/pci.h>
  30 #include <linux/init.h>
  31 #include <linux/blkdev.h>
  32 #include <linux/delay.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/device.h>
  35 #include <scsi/scsi_host.h>
  36 #include <linux/libata.h>
  37
  38 #define DRV_NAME        "sata_uli"
  39 #define DRV_VERSION     "1.0"
  40
  41 enum {
  42         uli_5289                = 0,
  43         uli_5287                = 1,
  44         uli_5281                = 2,
  45
  46         uli_max_ports           = 4,
  47
  48         /* PCI configuration registers */
  49         ULI5287_BASE            = 0x90, /* sata0 phy SCR registers */
  50         ULI5287_OFFS            = 0x10, /* offset from sata0->sata1 phy regs */
  51         ULI5281_BASE            = 0x60, /* sata0 phy SCR  registers */
  52         ULI5281_OFFS            = 0x60, /* offset from sata0->sata1 phy regs */
  53 };
  54
  55 struct uli_priv {
  56         unsigned int            scr_cfg_addr[uli_max_ports];
  57 };
  58
  59 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
  60 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
  61 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
  62
  63 static const struct pci_device_id uli_pci_tbl[] = {
  64         { PCI_VDEVICE(AL, 0x5289), uli_5289 },
  65         { PCI_VDEVICE(AL, 0x5287), uli_5287 },
  66         { PCI_VDEVICE(AL, 0x5281), uli_5281 },
  67
  68         { }     /* terminate list */
  69 };
  70
  71 static struct pci_driver uli_pci_driver = {
  72         .name                   = DRV_NAME,
  73         .id_table               = uli_pci_tbl,
  74         .probe                  = uli_init_one,
  75         .remove                 = ata_pci_remove_one,
  76 };
  77
  78 static struct scsi_host_template uli_sht = {
  79         .module                 = THIS_MODULE,
  80         .name                   = DRV_NAME,
  81         .ioctl                  = ata_scsi_ioctl,
  82         .queuecommand           = ata_scsi_queuecmd,
  83         .can_queue              = ATA_DEF_QUEUE,
  84         .this_id                = ATA_SHT_THIS_ID,
  85         .sg_tablesize           = LIBATA_MAX_PRD,
  86         .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
  87         .emulated               = ATA_SHT_EMULATED,
  88         .use_clustering         = ATA_SHT_USE_CLUSTERING,
  89         .proc_name              = DRV_NAME,
  90         .dma_boundary           = ATA_DMA_BOUNDARY,
  91         .slave_configure        = ata_scsi_slave_config,
  92         .slave_destroy          = ata_scsi_slave_destroy,
  93         .bios_param             = ata_std_bios_param,
  94 };
  95
  96 static const struct ata_port_operations uli_ops = {
  97         .port_disable           = ata_port_disable,
  98
  99         .tf_load                = ata_tf_load,
 100         .tf_read                = ata_tf_read,
 101         .check_status           = ata_check_status,
 102         .exec_command           = ata_exec_command,
 103         .dev_select             = ata_std_dev_select,
 104
 105         .bmdma_setup            = ata_bmdma_setup,
 106         .bmdma_start            = ata_bmdma_start,
 107         .bmdma_stop             = ata_bmdma_stop,
 108         .bmdma_status           = ata_bmdma_status,
 109         .qc_prep                = ata_qc_prep,
 110         .qc_issue               = ata_qc_issue_prot,
 111         .data_xfer              = ata_pio_data_xfer,
 112
 113         .freeze                 = ata_bmdma_freeze,
 114         .thaw                   = ata_bmdma_thaw,
 115         .error_handler          = ata_bmdma_error_handler,
 116         .post_internal_cmd      = ata_bmdma_post_internal_cmd,
 117
 118         .irq_handler            = ata_interrupt,
 119         .irq_clear              = ata_bmdma_irq_clear,
 120
 121         .scr_read               = uli_scr_read,
 122         .scr_write              = uli_scr_write,
 123
 124         .port_start             = ata_port_start,
 125         .port_stop              = ata_port_stop,
 126         .host_stop              = ata_host_stop,
 127 };
 128
 129 static struct ata_port_info uli_port_info = {
 130         .sht            = &uli_sht,
 131         .flags          = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 132                           ATA_FLAG_IGN_SIMPLEX,
 133         .pio_mask       = 0x1f,         /* pio0-4 */
 134         .udma_mask      = 0x7f,         /* udma0-6 */
 135         .port_ops       = &uli_ops,
 136 };
 137
 138
 139 MODULE_AUTHOR("Peer Chen");
 140 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
 141 MODULE_LICENSE("GPL");
 142 MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
 143 MODULE_VERSION(DRV_VERSION);
 144
 145 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
 146 {
 147         struct uli_priv *hpriv = ap->host->private_data;
 148         return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
 149 }
 150
 151 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
 152 {
 153         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 154         unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
 155         u32 val;
 156
 157         pci_read_config_dword(pdev, cfg_addr, &val);
 158         return val;
 159 }
 160
 161 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
 162 {
 163         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 164         unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
 165
 166         pci_write_config_dword(pdev, cfg_addr, val);
 167 }
 168
 169 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
 170 {
 171         if (sc_reg > SCR_CONTROL)
 172                 return 0xffffffffU;
 173
 174         return uli_scr_cfg_read(ap, sc_reg);
 175 }
 176
 177 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 178 {
 179         if (sc_reg > SCR_CONTROL)       //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
 180                 return;
 181
 182         uli_scr_cfg_write(ap, sc_reg, val);
 183 }
 184
 185 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 186 {
 187         static int printed_version;
 188         struct ata_probe_ent *probe_ent;
 189         struct ata_port_info *ppi[2];
 190         int rc;
 191         unsigned int board_idx = (unsigned int) ent->driver_data;
 192         int pci_dev_busy = 0;
 193         struct uli_priv *hpriv;
 194
 195         if (!printed_version++)
 196                 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
 197
 198         rc = pci_enable_device(pdev);
 199         if (rc)
 200                 return rc;
 201
 202         rc = pci_request_regions(pdev, DRV_NAME);
 203         if (rc) {
 204                 pci_dev_busy = 1;
 205                 goto err_out;
 206         }
 207
 208         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
 209         if (rc)
 210                 goto err_out_regions;
 211         rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
 212         if (rc)
 213                 goto err_out_regions;
 214
 215         ppi[0] = ppi[1] = &uli_port_info;
 216         probe_ent = ata_pci_init_native_mode(pdev, ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
 217         if (!probe_ent) {
 218                 rc = -ENOMEM;
 219                 goto err_out_regions;
 220         }
 221
 222         hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
 223         if (!hpriv) {
 224                 rc = -ENOMEM;
 225                 goto err_out_probe_ent;
 226         }
 227
 228         probe_ent->private_data = hpriv;
 229
 230         switch (board_idx) {
 231         case uli_5287:
 232                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 233                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 234                 probe_ent->n_ports = 4;
 235
 236                 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
 237                 probe_ent->port[2].altstatus_addr =
 238                 probe_ent->port[2].ctl_addr =
 239                         (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
 240                 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
 241                 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;
 242
 243                 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
 244                 probe_ent->port[3].altstatus_addr =
 245                 probe_ent->port[3].ctl_addr =
 246                         (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
 247                 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
 248                 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;
 249
 250                 ata_std_ports(&probe_ent->port[2]);
 251                 ata_std_ports(&probe_ent->port[3]);
 252                 break;
 253
 254         case uli_5289:
 255                 hpriv->scr_cfg_addr[0] = ULI5287_BASE;
 256                 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;
 257                 break;
 258
 259         case uli_5281:
 260                 hpriv->scr_cfg_addr[0] = ULI5281_BASE;
 261                 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;
 262                 break;
 263
 264         default:
 265                 BUG();
 266                 break;
 267         }
 268
 269         pci_set_master(pdev);
 270         pci_intx(pdev, 1);
 271
 272         /* FIXME: check ata_device_add return value */
 273         ata_device_add(probe_ent);
 274         kfree(probe_ent);
 275
 276         return 0;
 277
 278 err_out_probe_ent:
 279         kfree(probe_ent);
 280 err_out_regions:
 281         pci_release_regions(pdev);
 282 err_out:
 283         if (!pci_dev_busy)
 284                 pci_disable_device(pdev);
 285         return rc;
 286
 287 }
 288
 289 static int __init uli_init(void)
 290 {
 291         return pci_register_driver(&uli_pci_driver);
 292 }
 293
 294 static void __exit uli_exit(void)
 295 {
 296         pci_unregister_driver(&uli_pci_driver);
 297 }
 298
 299
 300 module_init(uli_init);
 301 module_exit(uli_exit);